Spool device for type ribbon material



Aug. 18, 1931. i E. KIRKBRIDE 1,319,712

SPQOL DEVICE FOR TYPE RIBBON MATERIAL Filed Aug. 13, 1927 2 Sheets-Sheet 1 1 Aug. 18, 1931. E. KIRKBRIDE SPOOL DEVICE FOR TYPE RIBBON MATERIAL 2 Sheets-Sheet 2 Filed Aug '13, 1927 Patented Aug. 18, 1931 UNITED STATES EDMUND KIRKBRIDE, OF CAMDEN, NEW JERSEY, ASSIGNOR F ONE-HALF TO' I S. C. LOVELAND, OF HAMMONTON, NEW JERSEY V v I SPOOL nnvron non TYPE'RIBBON MATERIAL Application med August 13,

7 My invention relates to ribbon-winding mechanism for use in winding the spools of typewriters.

Apurpose of my invention is to interchangeably wind the widely variant spools of different commercial typewriters upon common winding mechanism.

A furtherpurpose is to mount a spool for rewindin'g between a friction disc and a m cone that are at opposing ends'of relatively spaced coaxial spindles that are spring- 7 pressed toward engagement.-

. A further purposeis to recess the bearing side of a driving disc near its axis of rotation in order to limit its engagementwith a driven spool to that portion of its surface that is more distant from its axis of rotation.

A further purpose is to make a centering cone revoluble in order to adapt it to use with 26 a wider range of spools.

A further purpose is to recess one side of a revoluble centering cone in order to adapt it to use with spools having radially inward extending portions.

A further purpose is to give a spool winding centering cone a convergence steep enough to avoid engagement with the drlvlng pin of one spool and a total divergence great enough to properly center spools of large bore.

A 'further purpose'is to use the door of the case of a ribbon supply" roll and a cooperatin spring fastening of the door to adjustably brake the unwinding of the roll.

A further purpose is to adjustably'gui'de the ribbon from the supply roll to the winding mechanism.

1 Further purposes will appear in the specification and in the claims. I have selected. for illustration one typ only of my'invention; showing a type however that is adapted to easy and inexpensive manufacture, that is practical and efficient in operation, and which illustrates particu-- larl well the principles involved. g igure 1 is a side elevation of structure embodying my invention illustrated as winding a typewriter spool and shown with the door in front of a ribbon supply roll open.

Figure 2 is a section upon the line 22 80 of Figure 1.

' spools.

1927. Serial no. 212,672

Figure 3 is a section of Figure 1 taken upon the line 33 thereof.

Figures 4 to 7 are vertical longitudinal fragmentary elevations of the wi'ndingmech-f PATENT OFFICEJT' U Q anism'with different types of commercial Figure 8 is a section of Figure 7 taken upon theline 88 thereof. v I

Like numerals refer to like parts in allfigures.

Referring tothe drawings and describing 19 in bearings 20 and 21 that are in turn relatively spaced and mounted co -axial inthe 1e, spectlve standards 14 and 15.

The tubular bearings 20 and 21 are preferably both adjustable in the standards and in the illustration this adjustment is accomplished by longitudinal sliding inthe respective bearings after. loosening a screw 24 hold ing the bearing to pos tion.

The driving spindle 18 turns inthebearing 20 and the driving disc is at one endof the bearing and the operating handle 25 at theother.

The centering head 17 diverges from its apex rearwardly and is preferably revoluble. In the form shown it is carried at the forward end ofthe spindle 19 which is longitudinally movable in the bearing21" and spring-pressed along the common axis toward the driving head 16. The bearing 21 is longitudinally bored and counterbored at 26 and 27, the rearward portion 28 of'the spindlefitting the bore and its enlarged forward portion 29 fitting the counterbore. A spring 30'compressed between the forwardly directed shoulder 81 at the bottom of-the counterbore and the rear end shoulder 32 of the enlarged portion 29, resiliently presses the spindle axially toward the driving disc.

The forward end of the spindle is reduced at 33 and loosely fits into a central socket 34 of the head 17 which is loosely and resiliently held to place on the end of the spindle as by suitable pin and groove connection. I As shown, the circumferential groove 35 on the spindle receives the inner end 36 of the screw-pin 37 mounted in the head. It is with some spools quite desirable that the centering head turn with the spool, as when the bore of the spool is considerable or when the spool has a portion radially interlocking with the head.

To make friction low between the head and spindle the bearing engagement is between the rounded or taper end 38 of the spindle and the bottom of the socket 34.

The end 36 of the screw has loose engagement in the groove and preferably has slight clearance from the side of the groove during bearing engagement between the bottom of the socket 34 and the end of the spindle. This slight clearance avoids friction resistance between the end of the screw andthe spindle which at its relatively greater distance from the axis of rotation would result in relatively greater resistance to turning.

The spindle 19 is extended rearwardly beyond the bearing 21 and notched or recessed on its lower side to receive the upper end of a lever 39 pivoted at 40 upon the outer end of a rod 41 carried by the standard 14. This lever is used to retract the spindle 19 to insert or remove a spool. The pressure of the spring is preferably considerable which makes it desirable to present a flat surface at 42 transverse to the direction of motion of the lever, and I find it convenient to make the lever of a flat and relatively thin member, pivoting it transversely to the flat at an intermediate point in the slotted end of the rod 41 and turning through 90 degrees the upper end of the flat to loosely fit the recess 39 of the spindle and the lower end through 90 degrees to afford a flat surface for operating the lever.

The casing 12 carries the vertical supply roll 13 wound upon a spool 43 that is pivoted upon a pin 44 in the bottom 45 of the casing. The base is apertured at 46 below the roll so that the lower portion of a full size roll ex tends somewhat through this aperture. The circumferential wall 47 of the casing is substantially concentric with the pin 44 pivoting the spool and is apertured at 48 to pass the ribbon 49.

I pivotally mount a ribbon guide member 50 on the outer wall of the casing by means of a screw 51. The lower end of this guide is recessed at 52 to laterally engage the sides of the ribbon between the casing and the spool.

The winding mechanism is used with spools of difi'erent lengths without need for changing the longitudinal adjustment of the bearings 20 and 21, the angular position of the guide 50 being adjusted to direct the ribbon to the middle of the spool.

The casing door 53 in frontof the roll is hinged at 54 and is so formed that its inner surface 55 is adapted to close against the surface of the roll 13.

I make the pressure of. engagement .between'the door and the side of the roll adjustable and use the resultant friction to prevent the roll from unwinding except by reason of the operation of the handle 25. The fastening member 56, preferably of spring material, isslotted at 57 and the slot registers with the shank of a screw 58 in the top of the case, so that the door when closed to the desired extent is held to position by the tightening of the screw., I usually prefer to have the engagement between the side of the door and the side of the roll but there is some advantage in having this engagement between the sideof the door and the end of the gence of the cone is made great enough to avoid engagement between the surface of the cone and the end of a driving pin 64 of the spool. The other side of the spool is engaged by the driving surface of the disc.

In Figure 5 the spool has a projecting bead 65 around the disc end of the bore of the spool, and a central recess 66 of thediscfprevents the engagement-between the disc and the spool at this bead, the engagement be-' tween the spool and disc being at 67 near the outer circumference of the CllSC.

In the spool shown in- Figure 6 the center mg end of the spool has a relatively large bore and in this case it is quite desirable that the centering head rotate with the spool.

In the spool of Figures 7 and 8, the spool radially projects inwardly at 68: and 69 and the side of the head is recessed at 70 toreceive these inward projections which would otherwise prevent proper centering by the cone. VVi-th'this spool there is thus a radial interlocking between the spool and cone so that they must rotate together. 7 l

In operation the spool is inserted between the cone and disc while. they are held apart by using the lever 39. Thev end of the ribbon from the supply roll is then fastened to the in Figure 4 the spool and the spool wound up by turning the handle 25.

Preferably the ribbon is marked with suitable graduations of length which may be used to wind any desired length upon the spool.

The advantageous use of spool winding mechanism is often contingent upon its adaptation to easy winding of any one of widely variant spools and the novel features of my structureadapts itato this use.

In View of my invention and disclosure variations and modifications to meet individual whim or particular need will doubtless become evident to others skilled inthe art and I therefore claim all such in so far as they fall within the reasonable spirit and scope of my invention.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is 1 i 1. In a spool winder, the combination of a longitudinally movable shaft, a centering head having a rearwardly sloping surface and a rearward axial socket receiving a forward portion of the shaft, affording bearing engagement at the bottom to the socket be tween the end of the shaft and the head, a

1 friction driving disc axially in line with the standards in front thereof in combination with winding mechanism, comprising spaced bearings axially in line and supported in the respective standards, a spindle in each bearing, a winding handle fastened to one of the spindles, a friction face late and a center ing cone upon the opposing ends of the respective spindles, the cone being adapted to engage upon its conical surface so as to fit variant sizes of openings, a spring adapted to press one of the spindles toward engagement with the other and retractive means for pushing back the spindle acted upon by the spring for insertion of a spool.

3. A base carrying a pivotal mount for a supply roll and spaced standards in combination with spool winding mechanism comprising spaced bearings axially in line supported in the respective standards, a spindle in each bearing, a winding handle and a friction disc upon opposite ends of one of the spindles, a centering cone revolubly mounted upon the adjacent end of the other spindle,

the taper fitting the edges of openings of ings in the respective standards, a spindle in each bearing one of them being recessed, a

winding handle and a friction disc fastened on opposite ends of one of the spindles, a centering cone upon the adjacent end of the second spindle having the larger end of the cone larger and the smaller end smaller than the openings in the spools with which it is intended to be used, a spring pressing the second spindle toward engagement with the first and a lever adapted to retract the second spindle against the action of the spring, the lever comprising a flat member bent so that its fiat sides lie parallel to the axis of the spindle in the middle, and transverse thereto at each end, pivoted in its parallel portion and having one end engaging in the recess.

5. In ribbon winding mechanism, a pair of spaced standards bored coaxially, a bearing mounted in one of the standards, a spindle in the bearing having a friction driving disc at one end and a turning handle at the other, a second bearing coaxial with the first,

bored and counterbored from the end toward the first hearing, a spindle having a reduced portion fitting the bore and an intermediate portion fitting the counterbore, a spiral spring between the bottom of the bore and the enlarged portion of the spindle pressing the spindle toward the disc, a centering cone revolubly mounted upon the end of the spindle adjacent the disc and adapted to center at an intermediate part of the cone surface, and means for longitudinally retracting the spindle against the action of the spring for insertion of a spool.

6. In ribbon winding mechanism, a friction-driving disc adapted to rotation, a bearing coaxially in line with and spaced from the disc and having a rearwardbo-re and a forward counterbore, a spindle having reduced portion fitting the bore and an intermediate enlarged portion fitting the counter- EDMUND KIRKBRIDE. 

